asyncrat | 55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/07/2026, 03:11

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General

Target
55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
Size 45KB
Sample260712-dp4zzsct6p
SHA256 55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b
MD5 ffa119f7f0814cc087771a6b19954300
SHA1 0cbc378571cae14ca03b1e10b4411bb6de9aa785
SHA512 bc5ed18d30a8133b85f0940413cb2394265078e34ae4fbb2e3ab8dd7663554aaf31bd9432f1cb44b07fd2caa61da8b1146cc2b0b241e5d757e86b1f86a990cd0
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVp3wZQaKkPIezjbBgX3iBzLEDsZEGpBDZkx:suJdpTPdI2/Ie3buXSBzLF3dkx
TLSH
T159231B003BE8813BF2BE4FB8A8F26145467AF5677603D6492CC4519B5723BC6CA426F9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

mephimsexhay.com:80
mephimsexhay.com:22
mephimsexhay.com:8080
mephimsexhay.com:8880
mephimsexhay.com:2052
mephimsexhay.com:2082
mephimsexhay.com:2086
mephimsexhay.com:2095
mephimsexhay.com:443
mephimsexhay.com:2053
mephimsexhay.com:2083
mephimsexhay.com:2087
mephimsexhay.com:2096
mephimsexhay.com:8443
www.mephimsexhay.com:80
www.mephimsexhay.com:22
www.mephimsexhay.com:8080
www.mephimsexhay.com:8880
www.mephimsexhay.com:2052
www.mephimsexhay.com:2082
www.mephimsexhay.com:2086
www.mephimsexhay.com:2095
www.mephimsexhay.com:443
www.mephimsexhay.com:2053
www.mephimsexhay.com:2083
www.mephimsexhay.com:2087
www.mephimsexhay.com:2096
www.mephimsexhay.com:8443
malware.mephimsexhay.com:80
malware.mephimsexhay.com:22
malware.mephimsexhay.com:8080
malware.mephimsexhay.com:8880
malware.mephimsexhay.com:2052
malware.mephimsexhay.com:2082
malware.mephimsexhay.com:2086
malware.mephimsexhay.com:2095
malware.mephimsexhay.com:443
malware.mephimsexhay.com:2053
malware.mephimsexhay.com:2083
malware.mephimsexhay.com:2087
malware.mephimsexhay.com:2096
malware.mephimsexhay.com:8443
downadup.mephimsexhay.com:80
downadup.mephimsexhay.com:22
downadup.mephimsexhay.com:8080
downadup.mephimsexhay.com:8880
downadup.mephimsexhay.com:2052
downadup.mephimsexhay.com:2082
downadup.mephimsexhay.com:2086
downadup.mephimsexhay.com:2095
downadup.mephimsexhay.com:443
downadup.mephimsexhay.com:2053
downadup.mephimsexhay.com:2083
downadup.mephimsexhay.com:2087
downadup.mephimsexhay.com:2096
downadup.mephimsexhay.com:8443

Mutex

wkqTEzXoA4cR

Attributes

delay
0
install
true
install_file
j431e390.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000e00000001c499-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4692	j431e390.exe
4260	j431e390.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	j431e390.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	j431e390.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4884	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
Token: SeDebugPrivilege	4692	j431e390.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 3472	1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe	87
PID 1132 wrote to memory of 3288	1132	55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe	88
PID 3472 wrote to memory of 5560	3472	cmd.exe	91
PID 3288 wrote to memory of 4884	3288	cmd.exe	92
PID 3288 wrote to memory of 4260	3288	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe
"C:\Users\Admin\AppData\Local\Temp\55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "j431e390" /tr '"C:\Users\Admin\AppData\Roaming\j431e390.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "j431e390" /tr '"C:\Users\Admin\AppData\Roaming\j431e390.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5560
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEDF5.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3288
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4884
- - C:\Users\Admin\AppData\Roaming\j431e390.exe
    "C:\Users\Admin\AppData\Roaming\j431e390.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4260

C:\Users\Admin\AppData\Roaming\j431e390.exe
"C:\Users\Admin\AppData\Roaming\j431e390.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4692

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpEDF5.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpEDF5.tmp.bat
Size 152B
SHA256 db19c9a7d9b2d55dff198697a231c5165e349d16c0e43169ab02dffe8c701cd4
MD5 136e5f78ae9c32f522577473f870f8dc
SHA1 56cfa77b492e30213d03b43375ac0fd7c467df04
SHA512 fcd0a774fe1601e83d5ee1291bfe59d8c35130a85786a0524e5f8a7640e175064dbe8d9004f6ce0ed93e889e790ad4e7b960cee20f31dc86d5bd31c87cb4f9f3
TLSH
T1EAC08C5261C6EA0F2C09642306FB94DDA1E2686A3E44AB40D30482095280889E0AA241
MD5 SHA1 SHA512 TLSH

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j431e390.exe

Path C:\Users\Admin\AppData\Roaming\j431e390.exe
Size 45KB
SHA256 55a81e515d4050a50de0b3c4110f8a9cec663f06199c97829e9f4a475a10ef3b
MD5 ffa119f7f0814cc087771a6b19954300
SHA1 0cbc378571cae14ca03b1e10b4411bb6de9aa785
SHA512 bc5ed18d30a8133b85f0940413cb2394265078e34ae4fbb2e3ab8dd7663554aaf31bd9432f1cb44b07fd2caa61da8b1146cc2b0b241e5d757e86b1f86a990cd0
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVp3wZQaKkPIezjbBgX3iBzLEDsZEGpBDZkx:suJdpTPdI2/Ie3buXSBzLF3dkx
TLSH
T159231B003BE8813BF2BE4FB8A8F26145467AF5677603D6492CC4519B5723BC6CA426F9
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1132-0-0x0000000074702000-0x0000000074703000-memory.dmp

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memory/1132-1-0x0000000000570000-0x0000000000582000-memory.dmp

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memory/1132-2-0x00000000746F0000-0x0000000074EAC000-memory.dmp

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memory/1132-3-0x0000000005090000-0x000000000512C000-memory.dmp

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memory/1132-8-0x00000000746F0000-0x0000000074EAC000-memory.dmp

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memory/4692-12-0x0000000074550000-0x0000000074D0C000-memory.dmp

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memory/4692-14-0x0000000074550000-0x0000000074D0C000-memory.dmp

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